diff options
| author |   Matthias Kaehlcke <mka@chromium.org> | 2016-09-14 09:52:08 -0700 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2016-09-16 18:38:22 +0100 |
| commit | 73e705bf81ceb84b39ef9cf6ffb8d12ca0c58a23 (patch) | |
| tree | d9b12334afd63697d21e46788c7a79c80abd0da7 /drivers/regulator/pwm-regulator.c | |
| parent | regulator: core: Don't skip set_voltage_time when ramp delay disabled (diff) | |
| download | linux-dev-73e705bf81ceb84b39ef9cf6ffb8d12ca0c58a23.tar.xz linux-dev-73e705bf81ceb84b39ef9cf6ffb8d12ca0c58a23.zip | |
regulator: core: Add set_voltage_time op
The new op is analogous to set_voltage_time_sel. It can be used by
regulators which don't have a table of discrete voltages. The function
returns the time for the regulator output voltage to stabilize after
being set to a new value, in microseconds. If the op is not set a
default implementation is used to calculate the delay.
This change also removes the ramp_delay calculation in the PWM
regulator, since the driver now uses the core code for the calculation
of the delay.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/pwm-regulator.c')
| -rw-r--r-- | drivers/regulator/pwm-regulator.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c index c24524242da2..1b88e0e15a70 100644 --- a/drivers/regulator/pwm-regulator.c +++ b/drivers/regulator/pwm-regulator.c @@ -10,7 +10,6 @@ * published by the Free Software Foundation. */ -#include <linux/delay.h> #include <linux/module.h> #include <linux/init.h> #include <linux/err.h> @@ -194,12 +193,10 @@ static int pwm_regulator_set_voltage(struct regulator_dev *rdev, unsigned int min_uV_duty = drvdata->continuous.min_uV_dutycycle; unsigned int max_uV_duty = drvdata->continuous.max_uV_dutycycle; unsigned int duty_unit = drvdata->continuous.dutycycle_unit; - unsigned int ramp_delay = rdev->constraints->ramp_delay; int min_uV = rdev->constraints->min_uV; int max_uV = rdev->constraints->max_uV; int diff_uV = max_uV - min_uV; struct pwm_state pstate; - int old_uV = pwm_regulator_get_voltage(rdev); unsigned int diff_duty; unsigned int dutycycle; int ret; @@ -233,13 +230,6 @@ static int pwm_regulator_set_voltage(struct regulator_dev *rdev, return ret; } - if ((ramp_delay == 0) || !pwm_regulator_is_enabled(rdev)) - return 0; - - /* Ramp delay is in uV/uS. Adjust to uS and delay */ - ramp_delay = DIV_ROUND_UP(abs(req_min_uV - old_uV), ramp_delay); - usleep_range(ramp_delay, ramp_delay + DIV_ROUND_UP(ramp_delay, 10)); - return 0; } |